Monday, January 5, 2015

Karachi's mangroves, defence against storms and tsunamis, threatened

Space Daily via AFP: Thick mangroves have long protected Karachi, southern Pakistan's sprawling metropolis, from battering by the Arabian Sea, but pollution, badly managed irrigation and years of illegal logging have left this natural barrier in a parlous state.

Experts fear that loss of the natural barrier formed by the mangroves could put the city of nearly 20 million people at greater risk from violent storms and even tsunamis. Close to Karachi, the mighty Indus river ends its long journey from the Himalayas in the sea.

The river delta is home to the shimmering green mangrove, a delicate ecosystem that thrives in the mingled salt and fresh water....But the mangrove is a shadow of its former self -- from 600,000 hectares in the early 20th century now barely 130,000 hectares remain, according to marine biologist Mohammad Moazzam Khan.

The rest has fallen victim to illegal loggers, pollution from nearby industry and changes to the river flow caused by irrigation upstream on the agricultural plains of Sindh and Punjab provinces. The fishermen, who make a livelihood from the fish and shellfish that shelter in the mangroves, have warned about their decline for years....

June 2009 – At the studios of Cleanskies TV, I was interviewed about the costs of climate change, and discussed adaptation efforts underway in the US and around the world.

May 2009 – I helped draft the scenarios for Rising Waters, a multistakeholder scenarios effort focused on climate change adaptation in the Hudson Valley. The final report is now completed and available here.

May 2008 – I reviewed two books on climate and energy in the New Leader magazine: James Gustave Speth's The Bridge at the Edge of the World: Capitalism, the Environment and Crossing from Crisis to Sustainability, plus Robert Bryce's Gusher of Lies: The Dangerous Delusions of Energy Independence.

January 2008 – A very local paper covers a very global issue.... The Litchfield County Times in northwestern Connectictut ran an article in January 2008 about Carbon-Based.

Now available: Climate Change Adaptation in 2011

A selection of my writings from 2011, plus some of my posts, as well as links... all focusing on the risks of climate change